The HELD 3D-Skin Warm Long Sleeve Functional Shirt provides exceptional thermal insulation and optimal breathability. Crafted using seamless 3D knitting technology, it ensures a precise fit and comfort without irritation. The shirt incorporates odor-neutralizing properties, making it perfect for extended wear. Made with NILIT® HEAT high-performance fibers, it offers superior warmth retention while remaining lightweight. This functional shirt is ideal for off-road activities and high-performance sports, ensuring you stay warm and comfortable in all conditions.